The Model 91 (Class 1) data logging sound meters are the ideal instruments to measure vehicle noise. On these models, the pre-amplifier can be removed from the instrument, connected via a cable and located next to the exhaust in the correct position. This allows the sound level meter to be read from the driver’s seat so the correct engine speed can be set for measuring vehicle exhaust noise.
Both sound meters can also be used for the risk assessment of noise levels providing time history and the measurement of all required parameters needed to comply with the Noise at Work Regulations and EU Directive 2003/10/EC.
Each data logging sound meter has been designed to be easy to use whilst providing the user with the fundamental parameters required to comply with current legislation such as Leq, LEPd and LCPeak.
All sound meters in the Quantifier range are data logging making it easy to transform your noise measurements into informative reports. Our outstanding Pulsar Analyser reporting software package is provided as standard, making the transformation of measurements into informative reports a simple task.
The ‘Analyser’ Sound Level Meter Software package is supplied as standard with the Models 91 instruments. The instruments can store data in their internal memory and this information can be downloaded and reports created using the exceptional Pulsar ‘Analyser’ download and analysis reporting software.
The Sound Level Meter Software also has a special database of hearing protectors that allows the user, at the click of a button, to have all calculations done for them automatically. A selection of hearing protection is listed and a report can be compiled.
The sound meters can be supplied as part of a complete noise measurement kit, containing all that is required to carry out a noise survey.
Outdoor noise monitoring kits are also available for the Quantifier Range enabling you to protect your meter from the climate and dust.
Class 1 Model 91, Model 93 & Model 95
Class 2 Model 92, Model 94 & Model 96
IEC61672-1:2002 Class 1 or 2 Group X
IEC 60651:2001 Type 1 or Type 2
IEC 60804:2000 Type 1 or Type 2
ANSI S1.4 with NK:70 Random Incidence Adaptor
1:1 & 1:3 Octave Filters to IEC 61260 Class 1 (where fitted)
Class 1 MK:224 pre-polarised Free-field ½
Class 2 MK:216 pre-polarised Free-field ½
Class 1 MV:200D Removable Preamplifier
Class 2 MV:200D Integral Preamplifier
Broadband 21dB(A) to 140dB(A) Class 1
25dB(A) to 140dB(A) Class 2
143dB(C) Peak (70dB to 140dB Range)
1:1 Octaves 19dB(Z) to 140dB(Z)
1:3 Octaves 14dB(Z) to 140dB(Z)
Noise Floor (Typical)
Broadband 18dB(A) Class 1, 20dB(A) Class 2
1:1 Octaves 12dB(Z) @ 1kHz 1:1 Octave Band
1:3 Octaves 7dB(Z) @ 1kHz 1:3 Octave Band
Channel 1 ‘A’, ‘C’ or ‘Z’
Channel 2 ‘C’ for Peak
Z weighting is a flat frequency response. When either 1:1 or 1:3
Octave Band Filters are selected the ‘Z’ weighting is used.
‘F’ (Fast), ‘S’ (Slow) & ‘I’ (Impulse) to IEC 61672-1:2002 Class 1 or 2
LAeq, LCeq or LZeq, LCpeak
LAF, LAS, LAI, LCF, LCS, LCI, LZF, LZS or LZI (not stored)
LAFmax, LASmax, LAImax, LCFmax, LCSmax, LCImax, LZFmax, LZSmax or LZImax
LAFmin, LASmin, LAImin, LCFmin, LCSmin, LCImin, LZFmin, LZSmin, LZImin
LAE, LCE or LZE, LAleq, LCleq or LZleq, LAFTeq
L0.1 to L99.9 (five simultaneous user-selected values available)
Date and time, 1 second Short Leq Noise Profile (LAeq, LCeq or LZeq)
1:1 or 1:3 filter selected
Filtered LZS, LZF or LZI (not stored)
Filtered LZeq (stored), LAeq, LCeq or LZeq (stored)
Date and time
Frequency Bands (Nominal Frequencies)
1:1 Octave Band 31Hz to 16kHz
1:3 Octave Band 25Hz to 16KHz
20Hz & 20kHz 1:3 Octave band with MO:800/6 Factory Option
16Mbit memory allowing up to:
1300 broadband measurements
770 1:1 octave measurements
330 1:3 octave measurements
For example, broadband mode allows 12 days of 15 minute measurements to be stored.
Calibration records are automatically stored in the instrument memory.
Noise Profile (LAeq, LCeq or LZeq).
Short Leq (LAeq, LCeq or LZeq)
Up to 12 days at 1 second acquisition with 2 second factory set option
The unit can be set to record and store data over fixed times of:
1 minute 5 minutes
10 minutes 15 minutes
30 minutes 1 hour
8 hours 12 hours
Graphical LCD with Quasi-Analogue Display
Selected measurement parameter with level Warnings for Overload, Under Range
Battery Level & External Power Indicators
Time & Frequency Weighting
Elapsed measurement time
Real time short Leq (broadband mode)
Graphical 1:1 and 1:3 Octave Band (recall mode only)
Recalled stored measurements
Measurement Range & Instrument settings
340mm x 75mm x 25mm
2 x AA (LR6)
Broadband Mode typically >24 hours
Temperature Operating –10oC to +50oC
Storage –20oC to + 60oC
Humidity Up to 95% RH Non Condensing
USB Type B Data Out
Multipin I/O for optional connections
Unweighted AC Output via Multipin I/O Connector
PU:90C recommended (Specify UK, EU or US plug type)
Except where modified by EN 61000-6-1:2007
Standard: ZL:100 USB to USB
Optional: ZL812 AC Output Cable to Phono Cable
ZL:813 RS232 Output Cable
Pulsar Analyser download, analysis & reporting software
Compatible with Windows 9x / Me / 2000 / NT / XP and Vista
Sound Level Meter Measurement Kit
Model 91 Model 91K
Model 92 Model 92K
Model 93 Model 93K
Model 94 Model 94K
Model 95 Model 95K
Model 96 Model 96K
Instruments can be supplied as a complete measurement kit to ensure you have all of the accessories necessary to perform your noise survey. The Quantifier noise measurement kit contains: Sound Level Meter, Acoustic Calibrator, Windshield, Hard Attache Case, Wrist Strap, Analyser Software, Download Cable, Batteries, Operating Manuals, Calibration Certificates & Extended Warranty Record.